在使用brew安装的时候一直卡在update brew阶段，下载文件极度缓慢（几 KB/s）
问题发现
在通过brew update --verbose观察update过程中，发现在从GitHub仓库获取文件的时候卡住，可能是由于国内访问github过慢导致。
问题解决
主要解决国内网络环境GitHub下载速度慢，我们可以更换homebrew的镜像源为国内源。
更换源为阿里源
1 | # 替换brew.git: |
2 | cd "$(brew --repo)" |
3 | git remote set-url origin https://mirrors.aliyun.com/homebrew/brew.git |
4 | |
5 | # 替换homebrew-core.git: |
6 | cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core" |
7 | git remote set-url origin https://mirrors.aliyun.com/homebrew/homebrew-core.git |
8 | |
9 | # 替换homebrew-bottles: |
10 | echo 'export HOMEBREW_BOTTLE_DOMAIN=https://mirrors.aliyun.com/homebrew/homebrew-bottles' >> ~/.zshrc |
11 | source ~/.zshrc |
更换为清华源
自我感觉没有阿里源快
1 | # 替换brew.git |
2 | cd "$(brew --repo)" |
3 | git remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/brew.git |
4 | |
5 | # 替换homebrew-core.git |
6 | cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core" |
7 | git remote set-url origin https://mirrors.tuna.tsinghua.edu.cn/git/homebrew/homebrew-core.git |
8 | |
9 | echo 'export HOMEBREW_BOTTLE_DOMAIN=https://mirrors.ustc.edu.cn/homebrew-bottles' >> ~/.zshrc |
10 | source ~/.zshrc |
11 | |
12 | # 刷新源 |
13 | brew update |
更换homebrew-cask源
阿里云的镜像站没有提供homebrew-cask，通过搜素发现USTC镜像站提供了homebrew-cask源。更换此源：
1 | # 替换homebrew-cask.git: |
2 | cd "$(brew --repo)"/Library/Taps/homebrew/homebrew-cask |
3 | git remote set-url origin https://mirrors.ustc.edu.cn/homebrew-cask.git |
切换回官方源
若发现替代后无反应，可以重置回官方源
1 | 重置brew.git: |
2 | cd "$(brew --repo)" |
3 | git remote set-url origin https://github.com/Homebrew/brew.git |
4 | |
5 | 重置homebrew-core.git: |
6 | cd "$(brew --repo)/Library/Taps/homebrew/homebrew-core" |
7 | git remote set-url origin https://github.com/Homebrew/homebrew-core.git |
注释掉bash配置文件里的有关Homebrew Bottles即可恢复官方源，重启bash或让bash重读配置文件。